- A
A private endpoint for the storage account
Why wrong: A private endpoint creates a private IP in the VNet, which the question explicitly says they do not want to deploy.
- B
A service endpoint for Microsoft.Storage
A service endpoint allows the selected subnet to access the storage service over the Azure backbone while the service keeps its public endpoint. It fits the requirement to avoid private DNS and private IP deployment.
- C
A route table with a default route to the storage account
Why wrong: Route tables do not grant authorization to a service and cannot make a storage account accessible only from one subnet.
- D
An application security group containing the subnet
Why wrong: Application security groups are used inside NSG rules for VM traffic, not for granting access to Azure Storage.
AZ-104 Implement and Manage Virtual Networking Practice Question
This AZ-104 practice question tests your understanding of implement and manage virtual networking. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A storage account must be reachable only from one subnet. The team does not want to deploy a private endpoint or manage private DNS zones, and they are acceptable with the storage account continuing to use its public endpoint. Which feature should be configured on the subnet?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
A service endpoint for Microsoft.Storage
Option B is correct because a service endpoint for Microsoft.Storage allows a subnet to restrict access to a storage account's public endpoint without deploying a private endpoint or managing private DNS zones. When enabled, Azure adds the subnet's identity to traffic from that subnet, and the storage account's firewall can be configured to allow only that specific subnet, keeping the public endpoint active.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A private endpoint for the storage account
Why it's wrong here
A private endpoint creates a private IP in the VNet, which the question explicitly says they do not want to deploy.
- ✓
A service endpoint for Microsoft.Storage
Why this is correct
A service endpoint allows the selected subnet to access the storage service over the Azure backbone while the service keeps its public endpoint. It fits the requirement to avoid private DNS and private IP deployment.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
A route table with a default route to the storage account
Why it's wrong here
Route tables do not grant authorization to a service and cannot make a storage account accessible only from one subnet.
- ✗
An application security group containing the subnet
Why it's wrong here
Application security groups are used inside NSG rules for VM traffic, not for granting access to Azure Storage.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse service endpoints with private endpoints, assuming that restricting access to a subnet requires a private IP, when service endpoints achieve the same goal using the public endpoint with subnet-level firewall rules.
Detailed technical explanation
How to think about this question
Service endpoints work by extending the virtual network identity to the Azure service, allowing the storage account's firewall to accept traffic based on the source subnet's virtual network and subnet ID. The traffic still uses the public IP of the storage account, but the service endpoint ensures the source is authenticated via the VNet, eliminating the need for public IP-based firewall rules. A common real-world scenario is securing a storage account used by an application in a specific subnet without incurring the cost or complexity of private endpoints.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this AZ-104 question test?
Implement and Manage Virtual Networking — This question tests Implement and Manage Virtual Networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A service endpoint for Microsoft.Storage — Option B is correct because a service endpoint for Microsoft.Storage allows a subnet to restrict access to a storage account's public endpoint without deploying a private endpoint or managing private DNS zones. When enabled, Azure adds the subnet's identity to traffic from that subnet, and the storage account's firewall can be configured to allow only that specific subnet, keeping the public endpoint active.
What should I do if I get this AZ-104 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 11, 2026
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